package main

// import "fmt"
import (
	"fmt"
)
/**
  *打印
  */
func main(){
  // go run main.go
  fmt.Println("go")
  fmt.Print("go")

  a:= 10
  b:= 20
  c:= 30
  fmt.Printf("a=%v b=%v c=%v\n", a, b, c)

  const name, id = "bueller", 17
	err := fmt.Errorf("user %q (id %d) not found", name, id)
	fmt.Println(err.Error())

}
